Invention Grant
US08099008B2 Image heating apparatus with control means for controlling power to the coil that generates magnetic flux 有权
具有用于控制产生磁通量的线圈的功率的控制装置的图像加热装置

Image heating apparatus with control means for controlling power to the coil that generates magnetic flux
Abstract:
An image heating apparatus includes a coil for generating a magnetic flux by a current flowing therethrough; an image heating member having an electroconductive layer in which an eddy current is produced by the magnetic flux by which heat is generated, the image heating member being effective to heat an image on a recording material; an electroconductive magnetic flux adjusting member movable from a first position and a second position to decrease the eddy current produced in the image heating member by the magnetic flux; a temperature sensor for sensing a temperature of image heating member; electric power control means for control electric power supplied to the coil on the basis of an output of the temperature sensor, wherein the electric power control means changes an electric power condition to be supplied to the coil before start of the movement from the first position to the second position of magnetic flux adjusting member.
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